| 摘要 |
A circuit arrangement for use as a phase, resistance, or conductance discriminator in, for example, an automatic load matching unit such as an aerial tuning unit. The arrangement employs two diodes (D1, D2) in a two-terminal-pair-network, which diodes rectify voltages derived from two input voltages A and B to produce an output voltage Vo which is a function of both input voltages and is indicative, for example, of the difference in phase or modulus of the input voltages. The rectified voltages produced by the respective diodes can be combined, by suitable choice of components, in such a way that any non-linearity produced by one diode is exactly offset by the same non-linearity produced by the other diode.
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